There are many theories about why the Maya collapsed. I believe in many theories, and that not just one theory could end the Maya civilization. The theory that I believe the best is the fact that they didn't have enough land to grow crops anymore, or there were too many people for their land, and they got overpopulated. If the Maya had some hunters, and some planters, they would be more consistent with their food. Also if they used a better way to plant, they would always have land. They used a burn and crop method, and after a few uses in the same spot, they can't use it anymore. Also, if they extended their empire, they would have more land to plant their main crops such as maize, and cotton, and potatoes.